<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width= , initial-scale=1.0">
    <title>布局</title>
</head>
<body>
    <table width="100%" border="0">
        <thead>
            <tr>
                <td colspan="2" bgcolor="yellow">
                    <h1>head</h1>
                </td>
            </tr>
        </thead>
        <tbody>
            <tr style="height: 500px;">
                <td style="width: 20%;background-color: rgb(174, 216, 242);">
                    <h3>side</h3>
                </td>
                <td style="width: 80%;background-color: rgb(218, 234, 251);">
                    <h3>Main</h3>
                </td>
            </tr>
        </tbody>
        <tfoot>
            <tr>
                <td colspan="2" bgcolor="yellow">
                    <h1>foot</h1>
                </td>
            </tr>
        </tfoot>
    </table>
</body>
</html>